Fix typo in getting started docs

Closes gh-10736

Author: eleftherias

docs/manual/src/docs/asciidoc/_includes/about/getting-spring-security.adoc

@@ -53,7 +53,7 @@ If you wish to override the Spring Security version, you may do so by providing
 <properties>
 	<!-- ... -->
 	<spring-security.version>{spring-security-version}</spring-security.version>
-</dependencies>
+</properties>
 ----
 ====
 
@@ -68,7 +68,7 @@ You can do so by adding a Maven property, as the following example shows:
 <properties>
 	<!-- ... -->
 	<spring.version>{spring-core-version}</spring.version>
-</dependencies>
+</properties>
 ----
 ====